Just one other "con":

Other apps are not well integrated into the Hildon Desktop environment.

Example: I delete my Imap account in the standard email app but mail notify reminds on new mails!? No Modest or even Claws-Mail comes up.
Other examples are addressbooks of GPE, Pimlico or Claws-Mail. They should replace the original addressbook system wide.

There should be a fave apps selector like in Gnome or KDE or I don't find it in the preferences menu.